Lexus ES: Relay
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT MAIN RELAY (EFI-MAIN NO. 1)
| (a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
If the result is not as specified, replace the main relay (EFI-MAIN NO. 1). |
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2. INSPECT MAIN RELAY (EFI-MAIN NO. 2)
| (a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
If the result is not as specified, replace the main relay (EFI-MAIN NO. 2). |
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3. INSPECT MAIN RELAY (A/F HTR)
| (a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
If the result is not as specified, replace the main relay (A/F HTR). |
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4. INSPECT ELECTRONIC DRIVER UNIT RELAY (D INJ)
| (a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
If the result is not as specified, replace the electronic driver unit relay (D INJ). |
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5. INSPECT NO. 2 IGNITION RELAY (IG2 NO. 1)
| (a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
If the result is not as specified, replace the No. 2 ignition relay (IG2 NO. 1). |
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Precaution
PRECAUTION INITIALIZATION NOTICE:
Before replacing the ECM, refer to Registration.
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Perform Registration (VIN registration) after replacing the ECM.
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Perform Learning
Definition Of Terms
DEFINITION OF TERMS Term Definition Monitor Description Description of what the ECM monitors and how it detects malfunctions (monitoring purpose and details). Related DTCs Group of di
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System Diagram
SYSTEM DIAGRAM (a) The CAN communication system is composed of 5 buses. CAN Main Bus Line Terminating Resistor CAN Branch Line * Gateway Function Equipped ECU Bus Monitoring Direction - - Connected to Code ECU/Sensor Name CAN DTC Storage Note - C
Parts Location
PARTS LOCATION ILLUSTRATION *1 TELEPHONE MICROPHONE ASSEMBLY *2 INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - ECU-ACC FUSE - ECU-IG1 NO. 4 FUSE - ECU-IG2 NO. 3 FUSE (w/ Manual (SOS) Switch) - PANEL FUSE - ECU-DCC NO. 2 FUSE - METER-IG2 FUSE - ECU-B NO. 2 FUSE - DCM FUSE (w/ Manual (SOS) Switc
